On Wednesday police raided the headquarters of the operation, located in Tennoji Ward, and seized 190,000 discs whose content is considered obscene from a warehouse and a customer list.

Under Japanese law, films are required to have both male and female genitalia obscured. Police arrested the 64-year-old Korean national running the operation and eight other persons for the alleged distribution of obscene digital media.

Beginning in April of 2014, the operation sold discs to customers, including a man in Kyoto in August, for a few hundred yen each. The business accumulated sales of 400 million yen, police said.